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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'eeaf179c1c907f5684b29043eec3da6edfeaf0d68a77e4112f504c4c3f7e876f' 
  AND token = 'Z/1RsBW/pnYBCgUINLiglJ+kTF6neUCd+yeCWHQNZyA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}